1z0-822 Practice Exam Questions with Answers Oracle Solaris 11 Advanced System Administration Certification

Set-Publisher

With -P or --search-first, set the specified publisher first in the search order. When installing new packages, this publisher is searched first. Updates to already installed packages come from the same publisher that originally provided the package as long as that publisher remains sticky. When -P or --search-first is used with -p, only added publishers are placed first in search order.

Note:

* (not A, not B, not D) The privs key contains a comma-separated list of privilege numbers that will be effective when the command or action is run.

* euid and uid contain a single user name or a numeric user ID. Commands designated with euid run with the effective UID indicated, which is similar to setting the setuid bit on an executable file. Commands designated with uid run with both the real and effective UIDs. Setting uid may be more appropriate than setting the euid on privileged shell scripts.

* egid and gid contain a single group name or a numeric group ID. Commands designated with egid run with the effective GID indicated, which is similar to setting the setgid bit on a file. Commands designated with gid run with both the real and effective GIDs. Setting gid may be more appropriate than setting guid on privileged shell scripts.

* /etc/security/exec_attr is a local database that specifies the execution attributes associated with profiles.

/etc/security/exec_attr

Locally added entries. Make sure that the shipped header remains intact.

/etc/security/exec_attr.d/*

Entries added by package installation.

Signature Policy: verify

Verify that all manifests with signatures are validly signed, but do not require all installed packages to be signed.

This is the default value.

* pkgrecv

- Image Packaging System content retrieval utility

pkgrecv allows the user to retrieve packages from a pkg repository or package archive. pkgrecv can also optionally republish the retrieved packages to a different package repository or archive them.

-s src_repo_uri

A URI representing the location of a pkg repository or package archive from which to receive package data.

-d path_or_uri

The file system path or URI of the target to republish packages to. If -a is specified, the target is a new package archive that cannot already exist. Otherwise, the target must be a package repository that already exists. New repositories can be created using pkgrepo(1).

See % below.

coredump parameter: -m mink | minm | min%

Create a minfree file in the current savecore directory indicating that savecore should maintain at least the specified amount of free space in the file system where the savecore directory is located. The min argument can be one of the following:

k

A positive integer suffixed with the unit k specifying kilobytes.

m

A positive integer suffixed with the unit m specifying megabytes.

%

A % symbol, indicating that the minfree value should be computed as the specified percentage of the total current size of the file system containing the savecore directory.

The savecore command will consult the minfree file, if present, prior to writing the dump files. If the size of these files would decrease the amount of free disk space below the minfree threshold, no dump files are written and an error message is logged. The administrator should immediately clean up the savecore directory to provide adequate free space, and re-execute the savecore command manually. The administrator can also specify an alternate directory on the savecore command-line.

Incorrect:

Not C: Separate ZFS volumes must be used for the swap area and dump devices.

Interface mode displays the state of all IP interfaces (IP links) that are tracked by in.mpathd on the system.

Incorrect:

Not A: Address mode displays the state of all IPMP data addresses on the system.

Not B: Group mode displays the state of all IPMP groups on the system.

Not D: Probe mode displays information about the probes being sent by in.mpathd.

Not E: Target mode displays IPMP probe target information.

Required to maintain high availability --> use a mirror.

The same data will be accessed many times throughout the day. Configure the storage for maximum performance. Use caching.

Note:

* ppriv

- inspect or modify process privilege sets and attributes

* DiffServ uses the 6-bit Differentiated services Field (DS field) in the IP header for packet classification purposes.

* In the Diffserv model, the marker marks a packet with a value that reflects a forwarding behavior. Marking is the process of placing a value in the packet's header to indicate how to forward the packet to the network. IPQoS contains two marker modules:

/ dscpmk – Marks the DS field in an IP packet header with a numeric value that is called the Differentiated Services codepoint, or DSCP. A Diffserv-aware router can then use the DS codepoint to apply the appropriate forwarding behavior to the packet.

/ dlcosmk – Marks the virtual local area network (VLAN) tag of an Ethernet frame header with a numeric value that is called the user priority. The user priority indicates the class of service (CoS), which defines the appropriate forwarding behavior to be applied to the datagram.

Note:

* Differentiated services or DiffServ is a computer networking architecture that specifies a simple, scalable and coarse-grained mechanism for classifying and managing network traffic and providing quality of service (QoS) on modern IP networks. DiffServ can, for example, be used to provide low-latency to critical network traffic such as voice or streaming media while providing simple best-effort service to non-critical services such as web traffic or file transfers.

* IPQoS, included in Solaris, includes the following modules, which are part of the Differentiated Services (Diffserv) architecture that is defined in RFC 2475:

Classifier

Meter

Marker

IPQoS adds the following enhancements to the Diffserv model:

Flow-accounting module

802.1D datagram marker

Create the etherstub.

global# dladm create-etherstub etherstub

Create a VNIC over the etherstub.

global# dladm create-vnic -l etherstub vnic

Note: Etherstubs / Virtual Switches

The Etherstub is craeated as a dummy device to connect the various virtual NICs. User can imagine etherstub as a Virtual Switch to help visualize the virtual network as a replacement for a physical network where each physical switch is replaced by a virtual switch.

pkgrepo rebuild [-p publisher ...] -s repo_uri_or_path [--no-catalog] [--no-index]

Discards all catalog, search, and other cached information found in the repository, and then recreates it based on the current contents of the repository.

Incorrect:

Not A: pkg refresh [--full] [publisher ...]

Updates the client's list of available packages and publisher metadata for each publisher specified. If no publishers are specified, the operation is performed for all publishers.

root@solaris:~# zfs snapshot pool1/sales/qrreports@qrreportroot@solaris:~# zfs list -t snapshot -r pool1/sales/qrreportsNAME USED AVAIL REFER MOUNTPOINTpool1/sales/qrreports@qrreport 0 - 31K -root@solaris:~# zfs send -i pool1/sales/qrreports@qrreport pool1/sales/qrreports@mth2qtrreportError: Stream can not be written to a terminal.You must redirect standard output.

* Example:

root@solaris:~# zonecfg -z zd1

Use 'create' to begin configuring a new zone.

zonecfg:zd1> create

create: Using system default template 'SYSdefault'

zonecfg:zd1> exit

zonepath cannot be empty.

Zone zd1 failed to verify

zd1: Required resource missing

Configuration not saved; really quit (y/[n])? n

zonecfg:zd1> verify

zonepath cannot be empty.

zd1: Required resource missing

zonecfg:zd1> set zonepath=/zones/zd1

zonecfg:zd1> exit

Note:

* anet

Automatic network interface.

The anet resource represents the automatic creation of a network resource for an exclusive-IP zone.